Triple-Parallel Plastic Pulley, 50mm Diameter Subject_Zoology this motor-generator pairs a split-ring

this motor-generator pairs a split-ring commutator against slip rings with bulb indicators

this Van de Graaff generator delivers spark-producing high-voltage demonstrations in the physics classroom

and an ignition light that fires on compression

Four-times enlarged premium ear model with five separable sections exposes detailed outer

Used to crank a row of 16 cam-driven rods through a moving sine wave

Triple-Parallel Plastic Pulley, 50mm Diameter Subject_Zoology this motor-generator pairs a split-ringTriple parallel plastic pulley with three 50mm wheels on a steel frame with end hooks, supporting three rope compound arrangements for advanced mechanical advantage investigations.